Thread: Need help with homework assignment plz..

Here's the full problem: Here's the assignment: You are burning music CD's for a party. You've arranged a list of songs in the order you want to play them. However, you would like to maximize your use of space on the CD, which holds 80 minutes of music. So, you want to figure out the total time for a group of songs and see how they fit. Write a C++ program to help you do this. The data are on file songs.dat. The time is entered as seconds, but the output converts the seconds to minutes and seconds. After all the data has been read, the application should print a message indicating the time left on the CD. The output should be in the form of a table with columns and headings written on a file.. FOR EXAMPLE:

Song Song Time Total Time
Number Minutes Seconds Minutes Seconds
1 5 10 5 10
2 7 42 12 52
5 4 19 17 11
4 4 33 21 44
3 10 27 32 11
7 8 55 41 6
6 5 0 46 6
There are 33 minutes and 54 seconds of space left on the 80 minute CD.

Here's my code so far...

Your code is quite messy, and there's a lot of really simple errors (misspelling, missing semicolons, etc...). Did you look at your compile errors at all? They will tell you what is wrong. First you'll have to go through and fix all of that type stuff.

Second, do you have a flow chart, or psuedo code? Using some type of design plan will help a lot when writing programs of any size.

third, try to post your code using the [CODE] tags so that people don't have to download your files.

Either ask a specific question or don't ask at all. Why would we be inclined to solve your homework assignments. On second thought, if you have some bucks to spare...

How do I get the total time?? I can not do time1+time2+time3 etc. because I do not iknow how many values will be in the file..

I've ggot the loop

Code:

while (inData)
    {
        songmin = baseValue / 60
        songsec = baseValue % 60
        totalmin = songmin
        totalsec = songsec
        inData >> baseValue;
        totalmin = prevsongmin + songmin
        totalsec = prevsongsec + songsec

First, you left out SIX semicolons in this one loop. I think you need to go back over the basics of C++ which can be found here: http://www.cprogramming.com/tutorial.html

Try this:

Code:

while (inData)
    {
        songmin = baseValue / 60;
        songsec = baseValue % 60;
        totalmin += songmin;
        totalsec += songsec;   
        inData >> baseValue;
    }

Originally Posted by RVDFan85

I am only getting one error now. it says that there is a syntax error before string constant. here is the line of code it is referring to..

Code:

cout << setw(14) << "Number" << setw(8) << "Minutes" << setw(8)
         << "Seconds" << setw(8) << "Minutes" << setw(9) "Seconds" << endl;

again, this is very elementary. add << betwe setw(9) and "Seconds"

Thanks again for the help. I get frustrated and try to get the assignment done, so I guess I overlook some of the more simpiler things..

On another note, take more care when you code. There is no rush. The more careful you are, the less mistakes you will make. Especially with typo's like mis-spelt variable names and missing semi-colons

Originally Posted by System_159

First, you left out SIX semicolons in this one loop. I think you need to go back over the basics of C++ which can be found here: http://www.cprogramming.com/tutorial.html

Try this:

Code:

while (inData)
    {
        songmin = baseValue / 60;
        songsec = baseValue % 60;
        totalmin += songmin;
        totalsec += songsec;   
        inData >> baseValue;
    }

ok... so based on that code, how do I get the final time and subtract it from 80 to get the time remaining on the CD..